|
|
| Line 1: |
Line 1: |
| − | <div class="floatright">[[File:VTK_Examples_Baseline_PolyData_TestExtractSelectionOriginalId.png]]</div>
| + | = '''See [https://lorensen.github.io/VTKExamples/site/Cxx/PolyData/ExtractSelectionOriginalId ExtractSelectionOriginalId] on the new [https://lorensen.github.io/VTKExamples/site/ VTKExamples website].''' = |
| − | ==ExtractSelectionOriginalId.cxx==
| |
| − | <source lang="cpp">
| |
| − | #include <vtkVersion.h>
| |
| − | #include <vtkSmartPointer.h>
| |
| − | #include <vtkPointData.h>
| |
| − | #include <vtkIdTypeArray.h>
| |
| − | #include <vtkInformation.h>
| |
| − | #include <vtkPointSource.h>
| |
| − | #include <vtkExtractSelection.h>
| |
| − | #include <vtkSelection.h>
| |
| − | #include <vtkSelectionNode.h>
| |
| − | #include <vtkPolyData.h>
| |
| − | #include <vtkUnstructuredGrid.h>
| |
| − | #include <vtkIdTypeArray.h>
| |
| − | #include <vtkDataSetMapper.h>
| |
| − | #include <vtkProperty.h>
| |
| − | #include <vtkRenderWindow.h>
| |
| − | #include <vtkRenderWindowInteractor.h>
| |
| − | #include <vtkRenderer.h>
| |
| − | #include <vtkSphereSource.h>
| |
| − | #include <vtkVertexGlyphFilter.h>
| |
| − | | |
| − | int main(int, char *[])
| |
| − | {
| |
| − | vtkSmartPointer<vtkPointSource> pointSource =
| |
| − | vtkSmartPointer<vtkPointSource>::New();
| |
| − | pointSource->SetNumberOfPoints(50);
| |
| − | pointSource->Update();
| |
| − | | |
| − | std::cout << "There are " << pointSource->GetOutput()->GetNumberOfPoints()
| |
| − | << " input points." << std::endl;
| |
| − | | |
| − | vtkSmartPointer<vtkIdTypeArray> ids =
| |
| − | vtkSmartPointer<vtkIdTypeArray>::New();
| |
| − | ids->SetNumberOfComponents(1);
| |
| − | | |
| − | //set values
| |
| − | for(unsigned int i = 10; i < 20; i++)
| |
| − | {
| |
| − | ids->InsertNextValue(i);
| |
| − | }
| |
| − | | |
| − | vtkSmartPointer<vtkSelectionNode> selectionNode =
| |
| − | vtkSmartPointer<vtkSelectionNode>::New();
| |
| − | selectionNode->SetFieldType(vtkSelectionNode::POINT);
| |
| − | selectionNode->SetContentType(vtkSelectionNode::INDICES);
| |
| − | selectionNode->SetSelectionList(ids);
| |
| − | | |
| − | vtkSmartPointer<vtkSelection> selection =
| |
| − | vtkSmartPointer<vtkSelection>::New();
| |
| − | selection->AddNode(selectionNode);
| |
| − | | |
| − | vtkSmartPointer<vtkExtractSelection> extractSelection =
| |
| − | vtkSmartPointer<vtkExtractSelection>::New();
| |
| − | | |
| − | extractSelection->SetInputConnection(0, pointSource->GetOutputPort());
| |
| − | #if VTK_MAJOR_VERSION <= 5
| |
| − | extractSelection->SetInput(1, selection);
| |
| − | #else
| |
| − | extractSelection->SetInputData(1, selection);
| |
| − | #endif
| |
| − | extractSelection->Update();
| |
| − | | |
| − | //in selection
| |
| − | vtkSmartPointer<vtkUnstructuredGrid> selected =
| |
| − | vtkSmartPointer<vtkUnstructuredGrid>::New();
| |
| − | selected->ShallowCopy(extractSelection->GetOutput());
| |
| − | | |
| − | std::cout << "There are " << selected->GetNumberOfPoints()
| |
| − | << " points in the selection." << std::endl;
| |
| − | | |
| − | selected->Print(std::cout);
| |
| − | | |
| − | vtkIdTypeArray* originalIds = vtkIdTypeArray::SafeDownCast(selected->GetPointData()->GetArray("vtkOriginalPointIds"));
| |
| − | | |
| − | for(vtkIdType i = 0; i < originalIds->GetNumberOfTuples(); i++)
| |
| − | {
| |
| − | std::cout << "Point " << i << " was originally point " << originalIds->GetValue(i) << std::endl;
| |
| − | }
| |
| − | | |
| − | for(vtkIdType i = 0; i < originalIds->GetNumberOfTuples(); i++)
| |
| − | {
| |
| − | vtkIdType query = originalIds->GetValue(i);
| |
| − | for(vtkIdType j = 0; j < originalIds->GetNumberOfTuples(); j++)
| |
| − | {
| |
| − | if(originalIds->GetValue(j) == query)
| |
| − | {
| |
| − | std::cout << "Original point " << query << " is now " << j << std::endl;
| |
| − | }
| |
| − | }
| |
| − | }
| |
| − |
| |
| − | vtkSmartPointer<vtkDataSetMapper> inputMapper =
| |
| − | vtkSmartPointer<vtkDataSetMapper>::New();
| |
| − | inputMapper->SetInputConnection(pointSource->GetOutputPort());
| |
| − | vtkSmartPointer<vtkActor> inputActor =
| |
| − | vtkSmartPointer<vtkActor>::New();
| |
| − | inputActor->SetMapper(inputMapper);
| |
| − | | |
| − | vtkSmartPointer<vtkDataSetMapper> selectedMapper =
| |
| − | vtkSmartPointer<vtkDataSetMapper>::New();
| |
| − | #if VTK_MAJOR_VERSION <= 5
| |
| − | selectedMapper->SetInputConnection(selected->GetProducerPort());
| |
| − | #else
| |
| − | selectedMapper->SetInputData(selected);
| |
| − | #endif
| |
| − | vtkSmartPointer<vtkActor> selectedActor =
| |
| − | vtkSmartPointer<vtkActor>::New();
| |
| − | selectedActor->SetMapper(selectedMapper);
| |
| − | | |
| − | // There will be one render window
| |
| − | vtkSmartPointer<vtkRenderWindow> renderWindow =
| |
| − | vtkSmartPointer<vtkRenderWindow>::New();
| |
| − | renderWindow->SetSize(900, 300);
| |
| − | | |
| − | // And one interactor
| |
| − | vtkSmartPointer<vtkRenderWindowInteractor> interactor =
| |
| − | vtkSmartPointer<vtkRenderWindowInteractor>::New();
| |
| − | interactor->SetRenderWindow(renderWindow);
| |
| − | | |
| − | // Define viewport ranges
| |
| − | // (xmin, ymin, xmax, ymax)
| |
| − | double leftViewport[4] = {0.0, 0.0, 0.5, 1.0};
| |
| − | double rightViewport[4] = {0.5, 0.0, 1.0, 1.0};
| |
| − | | |
| − | // Setup the renderers
| |
| − | vtkSmartPointer<vtkRenderer> leftRenderer =
| |
| − | vtkSmartPointer<vtkRenderer>::New();
| |
| − | renderWindow->AddRenderer(leftRenderer);
| |
| − | leftRenderer->SetViewport(leftViewport);
| |
| − | leftRenderer->SetBackground(.6, .5, .4);
| |
| − | | |
| − | vtkSmartPointer<vtkRenderer> rightRenderer =
| |
| − | vtkSmartPointer<vtkRenderer>::New();
| |
| − | renderWindow->AddRenderer(rightRenderer);
| |
| − | rightRenderer->SetViewport(rightViewport);
| |
| − | rightRenderer->SetBackground(.4, .5, .6);
| |
| − | | |
| − | leftRenderer->AddActor(inputActor);
| |
| − | rightRenderer->AddActor(selectedActor);
| |
| − | | |
| − | leftRenderer->ResetCamera();
| |
| − | rightRenderer->ResetCamera();
| |
| − | | |
| − | renderWindow->Render();
| |
| − | interactor->Start();
| |
| − | | |
| − | return EXIT_SUCCESS;
| |
| − | }
| |
| − | </source>
| |
| − | | |
| − | {{VTKCMakeLists|{{SUBPAGENAME}}}}
| |
